Traveling and trying to keep on track

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I'm on the road right now, and headed to stay with my boyfriend's mom for the holiday. I've only had two meals on this trip so far, and neither were ideal for my calorie count. And I know once I'm not cooking for myself/choosing my meals, it'll be even worse. Does anyone have any tips or advice, even words of encouragement for this? I've been really proud of my success this month since I've been sticking so tight to my count, and I would hate to go home and see it all gone.

Thanks in advance.